A car smashed into the Co-op store in Oswaldtwistle last night around an hour after it closed.
The Audi caused damage to the wall of the supermarket on Union Road at around 11.15pm on Monday, February 18.
Police said the driver ran off following the collision.
A spokeswoman for Lancashire Constabulary said: "There was quite a lot of damage. The driver left the vehicle with no injuries and ran off. No one has been arrested. We are looking into the incident and would ask anyone with any information to contact us on 101."
A spokeswoman for the Co-op said the store had closed for the day at 10pm.
She added: "It's a bit of a shock but we don't really know what has happened yet and we are talking with police."